Change-retarding device for weft-replenishing looms.



No. 650,684. Patented May 29, 1900. W. N. KIM-BALL.

CHANGE RETABDING DEVICE FOR WEFT BEPLENISHING LODMS.

(Application filed Nov. 3, 1899.] (No Model.)

- llVVENTOl? m: Norms PETERS coy. PHQTOLITMOMASHINuTOMpp,

NiTn' I'IATES WILLIAM NELSON KIMBALL, OF SOMERSWORTH, NEW HAMPSHIRE.

CHANGE-RETA RDING' DEVICE FOR WEFT -REPLENISHING LOOMS.

SPECIFIQA'IION formingpart of Letters Patent No. 650,684, dated May 29, 1900. Appliation filed November 3, 1899. erial No. 735 685. (No model.)

To otZZ whom, it may concern.-

Be it known that I, WILLIAM NELsoN KIM- BALL, a citizen of the United States, residing at Somersworth, in the county of Strafford and State of New Hampshire, have invented certain new and useful Improvements in Change Retarding Devices for Weft -'Replenishing Looms, of which the following is a full, clear, and exact description.

The invention relates to Northrop looms; and its object is to provide certain new and useful improvements in Northrop looms-that is, to looms of the character shown and described in United States Patents Nos. 529,940 and 529,943, dated November 27, 1894whereby mispicks are prevented in case the filling breaks by delaying a call for a new bobbin and causing the harness to return to the same position it had at the time the thread broke and before the new bobbin was called for.

The invention consists of novel features and parts and combinations of the same, as will be fully described hereinafter and then pointed out in the claims.

A practical embodiment of the invention is represented in the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure 1 is a sectional side elevation of th improvement. Fig. 2 is a plan view of the improvement. Fig. 3 is a sectional side elevation of partof the same with parts in a different position. Fig. 4 is a like View of the same with parts in a still different position, and Fig. 5is an enlarged side elevation of a modified form of hook and slide.

In Northrop looms as heretofore constructed the filling-fork fails to tip the momentthe filling breaks, so that the bobbin-battery is actuated 'and' a new bobbin is immediately placed in position in the shuttle, whereby a mispick is invariably made, as the harness is then'not in proper position. provement presently to be described 'in detail the calling for ainew bobbin is delayed to allow the harness to return to the position it had at the time of the breaking of the filling, so that when the new bobbin is called for the harness is in the proper position, and Consequently a mispick is prevented.

With the im- As shown in the drawings, the filling-fork Ais pivoted at A on a carrying-slide B, held in a guide 0, supported by the breast-beam D of the loom-frame D, and said guide is pressed on by a spring E in the usual man ner. The filling-fork A is provided with the usual loop-like tail A normally riding at its free end on a slide F, fulcrumed on a hook G, pivotally connected with a filling-hammer H, secured on a rock-shaft I, mounted to turn in suitable bearings on the loom-frame and provided with the usual lever I,actuated by a cam on the lower shaft of the loom to impart a re ciprocatin g motion to the hook G by the fillinghammer H. The slide B is connected with and operates the battery for supplying filled bobbins to the shuttles in the usual manner, and as the connection between the slide and the battery is of the ordinary construction it is not deemed necessary to show and describe the same in detail, it being understood that when the slide is moved to the right against the tension of the spring E the battery is actuated from the slide and a new bobbin is supplied to the shuttle.

The top of the hook G is formed with the usual recess G, a shoulder G being at one end of the recess and a downwardly-inclined false hook G extending from the shoulder toward the pivot A of the filling-fork, the free end of the slide F. normally resting on the top of the shoulder G and its extreme and upwardly-curved end extending into, the opening of the false hook G3.

When the loom is in operation, the filling fork A is tipped by the filling in the usual manner to cause the tail A to swing upward out of the path of the false hook G? as the hookG is reciprocated. When the thread or yarn breaks and the filling-fork is not tipped by the filling, then the false hook G in the outward movement'of the hook G, is engaged by the tail A and the latter travels down the false hook, and on the return or in- 9 5 ward movement of the hook G the free end of the tail A passes under the slide F and into the'recess G, to be then engaged at the next outward movement of the hook G by the shoulder G whereby the tail A is carried along with the hook, and as the filling-fork is pivoted on 'the carrying-slide B it is evident that the latter is moved in the samedirection, and consequently the battery mechanism and the battery are actuated so as to supply a new bobbin to the shuttle.

The above-described operation takes place during two picks, and as the harness returns during these two picks to the original posi tion it had at the time of the breaking of the thread it is evident that the shed is in proper position to receive the filling for the new bobbin in the shuttle now to move through the shed.

From the foregoing it is evident that the bobbin is not supplied to the shuttle immediately after the breaking of the yarn, but after the expiration of two picks, to allow the harness to come back to the original position-that is, the one it had at the time of the breaking of the yarn-and consequently when the new filling moved through the shed said shed is in the proper position, owing to the position of the harness, and therefore a mispick does not take place.

From the foregoing it is further evident that the arrangement described can be readily carried out to cause the harness to move four picks or any desired number of picks as may be required, according to the work in hand.

Then the supplying of the new bobbin to the shuttle is to be delayed during four picks, for instance, the hook G is constructed as shown in Fig. 5-that is, the hook is provided with two false hooks G4 G and a double-arm ed pivoted slide F, of which the upper arm I extends into the open end of the false hook G and the lower arm F normally rests on the shoulder G6 and extends, with its curved upper end, into the open end of the hook G. Now when the thread or yarn breaks and the filling-hook is not tipped by the filling then the false hook G in the first outward movement of the hook is engaged by the tail A and the latter travels down the same and up on the return stroke and under the arm F to drop onto the arm F and on the second outward stroke of the hook the tail A travels from the arm F into the false hook G down the same, and up thereon on the second inward stroke of the hook. The tail A during this movement of the hook passes under the arm F into the recess G7 of the hook, to be finally engaged after four picks by the shoulder G to draw the filling-fork and slide B along to actuate the batteryafter four picks have been made.

Having thus fully described my invention, I claim as new and desire to secure by Letters Patent- 1. In a change-retarding device for looms, a hook, a false hook extending from the free end of the said hook, and a slide on said hook, having its free end extending into the opening of the false hook, substantially as shown and described.

2. A change-retarding device for looms having a carrying-slide, a filling-fork fulcrumed thereon and provided with a tail, a reciprocating hook in said carrying-slide and having a second slide extending over the recess thereof, a false hook on said reciprocating hook and extending in direction of the recess, the free upturned end of said second slide extending into the opening of said false hook, substantially as shown and described.

3. A change-retarding device for looms having a filling-fork, and a hook formed on its'top with a recess and a shoulder at one end of the recess, a false hook on the said hook and extending from the free end of the hook in direction of the shoulder, and a slide for the filling-fork tail to rest on, the said slide being pivoted at one end to the hook and adapted to normally restwith its free end on the shoulder of the hook, the extreme end of the slide being upwardly curved and extending into the opening formed by the false hook, substantially as described.

4. A change-retarding device for looms having a filling-fork, a hook provided with an engaging shoulder on its top, a false hook carried by the said hook, and a movable slide on said hook for the filling-fork tail to rest on, the said slide normally resting on the top of the shoulder of the hook, substantially as described.

5. In a change-retarding device for looms a hook formed with a shoulder, a slide fulcrumed on the hook near one end thereof and normally resting with its free end on the shoulder,and an upwardly-inclined false hook extending from the other end of said hook in" direction of the shoulder, substantially as described.

6. In achange-retarding device for looms a hook formed with a shoulder and provided with a plurality of false hooks located one above the other and extending from the end of the hook in direction of the shoulder, and

slides leading to the openings of the false hooks, substantially as described.

7. In a change-retarding device for looms a hook formed with a recess and an engaging shoulder at one end of the recess, a plurality of false hooks located one above the other and extending from the end of the hook in direction of the shoulder, and a plurality of slides pivotally connected with the hook and located above the recess, the free ends of said slides extending into the openings of the false hooks, substantially as shown and described.

8. A change retarding device for looms having a reciprocating hook provided with an engaging shoulder on its top, an upwardlyinclined false hook at the end of the hook and extending in direction of the shoulder, a filling-fork having a tail adapted to be held by the filling out of the path of the false hook, as the hook reciprocates, a movable slide on the hook extending over the shoulder of the hook and adapted to be engaged by the tail of the filling-fork in the absence of filling and serving to delay the engagement of the filling-fork tail with the shoulder of the hook, sition to be engaged by the shoulder of the the tail of the filling-fork in the outward reciprocating hook at its next outward movemovement of the reciprocating hook passing inent, substantially as described.

from said guide into the opening of the false WILLIAM NELSON KIMBALL. 5 hook and down the same and in the return or Witnesses:

inward movement of the reciprocating hook F. A. THURSTON,

lifting and passing under the said slide in 110- HENRY E. MORRISCY. 

